/*
 * jQuery UI 1.7.1
 *
 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
;jQuery.ui || (function($) {

var _remove = $.fn.remove,
    isFF2 = $.browser.mozilla && (parseFloat($.browser.version) < 1.9);

//Helper functions and ui object
$.ui = {
    version: "1.7.1",

    // $.ui.plugin is deprecated.  Use the proxy pattern instead.
    plugin: {
        add: function(module, option, set) {
            var proto = $.ui[module].prototype;
            for(var i in set) {
                proto.plugins[i] = proto.plugins[i] || [];
                proto.plugins[i].push([option, set[i]]);
            }
        },
        call: function(instance, name, args) {
            var set = instance.plugins[name];
            if(!set || !instance.element[0].parentNode) { return; }

            for (var i = 0; i < set.length; i++) {
                if (instance.options[set[i][0]]) {
                    set[i][1].apply(instance.element, args);
                }
            }
        }
    },

    contains: function(a, b) {
        return document.compareDocumentPosition
            ? a.compareDocumentPosition(b) & 16
            : a !== b && a.contains(b);
    },

    hasScroll: function(el, a) {

        //If overflow is hidden, the element might have extra content, but the user wants to hide it
        if ($(el).css('overflow') == 'hidden') { return false; }

        var scroll = (a && a == 'left') ? 'scrollLeft' : 'scrollTop',
            has = false;

        if (el[scroll] > 0) { return true; }

        // TODO: determine which cases actually cause this to happen
        // if the element doesn't have the scroll set, see if it's possible to
        // set the scroll
        el[scroll] = 1;
        has = (el[scroll] > 0);
        el[scroll] = 0;
        return has;
    },

    isOverAxis: function(x, reference, size) {
        //Determines when x coordinate is over "b" element axis
        return (x > reference) && (x < (reference + size));
    },

    isOver: function(y, x, top, left, height, width) {
        //Determines when x, y coordinates is over "b" element
        return $.ui.isOverAxis(y, top, height) && $.ui.isOverAxis(x, left, width);
    },

    keyCode: {
        BACKSPACE: 8,
        CAPS_LOCK: 20,
        COMMA: 188,
        CONTROL: 17,
        DELETE: 46,
        DOWN: 40,
        END: 35,
        ENTER: 13,
        ESCAPE: 27,
        HOME: 36,
        INSERT: 45,
        LEFT: 37,
        NUMPAD_ADD: 107,
        NUMPAD_DECIMAL: 110,
        NUMPAD_DIVIDE: 111,
        NUMPAD_ENTER: 108,
        NUMPAD_MULTIPLY: 106,
        NUMPAD_SUBTRACT: 109,
        PAGE_DOWN: 34,
        PAGE_UP: 33,
        PERIOD: 190,
        RIGHT: 39,
        SHIFT: 16,
        SPACE: 32,
        TAB: 9,
        UP: 38
    }
};

// WAI-ARIA normalization
if (isFF2) {
    var attr = $.attr,
        removeAttr = $.fn.removeAttr,
        ariaNS = "http://www.w3.org/2005/07/aaa",
        ariaState = /^aria-/,
        ariaRole = /^wairole:/;

    $.attr = function(elem, name, value) {
        var set = value !== undefined;

        return (name == 'role'
            ? (set
                ? attr.call(this, elem, name, "wairole:" + value)
                : (attr.apply(this, arguments) || "").replace(ariaRole, ""))
            : (ariaState.test(name)
                ? (set
                    ? elem.setAttributeNS(ariaNS,
                        name.replace(ariaState, "aaa:"), value)
                    : attr.call(this, elem, name.replace(ariaState, "aaa:")))
                : attr.apply(this, arguments)));
    };

    $.fn.removeAttr = function(name) {
        return (ariaState.test(name)
            ? this.each(function() {
                this.removeAttributeNS(ariaNS, name.replace(ariaState, ""));
            }) : removeAttr.call(this, name));
    };
}

//jQuery plugins
$.fn.extend({
    remove: function() {
        // Safari has a native remove event which actually removes DOM elements,
        // so we have to use triggerHandler instead of trigger (#3037).
        $("*", this).add(this).each(function() {
            $(this).triggerHandler("remove");
        });
        return _remove.apply(this, arguments );
    },

    enableSelection: function() {
        return this
            .attr('unselectable', 'off')
            .css('MozUserSelect', '')
            .unbind('selectstart.ui');
    },

    disableSelection: function() {
        return this
            .attr('unselectable', 'on')
            .css('MozUserSelect', 'none')
            .bind('selectstart.ui', function() { return false; });
    },

    scrollParent: function() {
        var scrollParent;
        if(($.browser.msie && (/(static|relative)/).test(this.css('position'))) || (/absolute/).test(this.css('position'))) {
            scrollParent = this.parents().filter(function() {
                return (/(relative|absolute|fixed)/).test($.curCSS(this,'position',1)) && (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
            }).eq(0);
        } else {
            scrollParent = this.parents().filter(function() {
                return (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
            }).eq(0);
        }

        return (/fixed/).test(this.css('position')) || !scrollParent.length ? $(document) : scrollParent;
    }
});


//Additional selectors
$.extend($.expr[':'], {
    data: function(elem, i, match) {
        return !!$.data(elem, match[3]);
    },

    focusable: function(element) {
        var nodeName = element.nodeName.toLowerCase(),
            tabIndex = $.attr(element, 'tabindex');
        return (/input|select|textarea|button|object/.test(nodeName)
            ? !element.disabled
            : 'a' == nodeName || 'area' == nodeName
                ? element.href || !isNaN(tabIndex)
                : !isNaN(tabIndex))
            // the element and all of its ancestors must be visible
            // the browser may report that the area is hidden
            && !$(element)['area' == nodeName ? 'parents' : 'closest'](':hidden').length;
    },

    tabbable: function(element) {
        var tabIndex = $.attr(element, 'tabindex');
        return (isNaN(tabIndex) || tabIndex >= 0) && $(element).is(':focusable');
    }
});


// $.widget is a factory to create jQuery plugins
// taking some boilerplate code out of the plugin code
function getter(namespace, plugin, method, args) {
    function getMethods(type) {
        var methods = $[namespace][plugin][type] || [];
        return (typeof methods == 'string' ? methods.split(/,?\s+/) : methods);
    }

    var methods = getMethods('getter');
    if (args.length == 1 && typeof args[0] == 'string') {
        methods = methods.concat(getMethods('getterSetter'));
    }
    return ($.inArray(method, methods) != -1);
}

$.widget = function(name, prototype) {
    var namespace = name.split(".")[0];
    name = name.split(".")[1];

    // create plugin method
    $.fn[name] = function(options) {
        var isMethodCall = (typeof options == 'string'),
            args = Array.prototype.slice.call(arguments, 1);

        // prevent calls to internal methods
        if (isMethodCall && options.substring(0, 1) == '_') {
            return this;
        }

        // handle getter methods
        if (isMethodCall && getter(namespace, name, options, args)) {
            var instance = $.data(this[0], name);
            return (instance ? instance[options].apply(instance, args)
                : undefined);
        }

        // handle initialization and non-getter methods
        return this.each(function() {
            var instance = $.data(this, name);

            // constructor
            (!instance && !isMethodCall &&
                $.data(this, name, new $[namespace][name](this, options))._init());

            // method call
            (instance && isMethodCall && $.isFunction(instance[options]) &&
                instance[options].apply(instance, args));
        });
    };

    // create widget constructor
    $[namespace] = $[namespace] || {};
    $[namespace][name] = function(element, options) {
        var self = this;

        this.namespace = namespace;
        this.widgetName = name;
        this.widgetEventPrefix = $[namespace][name].eventPrefix || name;
        this.widgetBaseClass = namespace + '-' + name;

        this.options = $.extend({},
            $.widget.defaults,
            $[namespace][name].defaults,
            $.metadata && $.metadata.get(element)[name],
            options);

        this.element = $(element)
            .bind('setData.' + name, function(event, key, value) {
                if (event.target == element) {
                    return self._setData(key, value);
                }
            })
            .bind('getData.' + name, function(event, key) {
                if (event.target == element) {
                    return self._getData(key);
                }
            })
            .bind('remove', function() {
                return self.destroy();
            });
    };

    // add widget prototype
    $[namespace][name].prototype = $.extend({}, $.widget.prototype, prototype);

    // TODO: merge getter and getterSetter properties from widget prototype
    // and plugin prototype
    $[namespace][name].getterSetter = 'option';
};

$.widget.prototype = {
    _init: function() {},
    destroy: function() {
        this.element.removeData(this.widgetName)
            .removeClass(this.widgetBaseClass + '-disabled' + ' ' + this.namespace + '-state-disabled')
            .removeAttr('aria-disabled');
    },

    option: function(key, value) {
        var options = key,
            self = this;

        if (typeof key == "string") {
            if (value === undefined) {
                return this._getData(key);
            }
            options = {};
            options[key] = value;
        }

        $.each(options, function(key, value) {
            self._setData(key, value);
        });
    },
    _getData: function(key) {
        return this.options[key];
    },
    _setData: function(key, value) {
        this.options[key] = value;

        if (key == 'disabled') {
            this.element
                [value ? 'addClass' : 'removeClass'](
                    this.widgetBaseClass + '-disabled' + ' ' +
                    this.namespace + '-state-disabled')
                .attr("aria-disabled", value);
        }
    },

    enable: function() {
        this._setData('disabled', false);
    },
    disable: function() {
        this._setData('disabled', true);
    },

    _trigger: function(type, event, data) {
        var callback = this.options[type],
            eventName = (type == this.widgetEventPrefix
                ? type : this.widgetEventPrefix + type);

        event = $.Event(event);
        event.type = eventName;

        // copy original event properties over to the new event
        // this would happen if we could call $.event.fix instead of $.Event
        // but we don't have a way to force an event to be fixed multiple times
        if (event.originalEvent) {
            for (var i = $.event.props.length, prop; i;) {
                prop = $.event.props[--i];
                event[prop] = event.originalEvent[prop];
            }
        }

        this.element.trigger(event, data);

        return !($.isFunction(callback) && callback.call(this.element[0], event, data) === false
            || event.isDefaultPrevented());
    }
};

$.widget.defaults = {
    disabled: false
};


/** Mouse Interaction Plugin **/

$.ui.mouse = {
    _mouseInit: function() {
        var self = this;

        this.element
            .bind('mousedown.'+this.widgetName, function(event) {
                return self._mouseDown(event);
            })
            .bind('click.'+this.widgetName, function(event) {
                if(self._preventClickEvent) {
                    self._preventClickEvent = false;
                    event.stopImmediatePropagation();
                    return false;
                }
            });

        // Prevent text selection in IE
        if ($.browser.msie) {
            this._mouseUnselectable = this.element.attr('unselectable');
            this.element.attr('unselectable', 'on');
        }

        this.started = false;
    },

    // TODO: make sure destroying one instance of mouse doesn't mess with
    // other instances of mouse
    _mouseDestroy: function() {
        this.element.unbind('.'+this.widgetName);

        // Restore text selection in IE
        ($.browser.msie
            && this.element.attr('unselectable', this._mouseUnselectable));
    },

    _mouseDown: function(event) {
        // don't let more than one widget handle mouseStart
        // TODO: figure out why we have to use originalEvent
        event.originalEvent = event.originalEvent || {};
        if (event.originalEvent.mouseHandled) { return; }

        // we may have missed mouseup (out of window)
        (this._mouseStarted && this._mouseUp(event));

        this._mouseDownEvent = event;

        var self = this,
            btnIsLeft = (event.which == 1),
            elIsCancel = (typeof this.options.cancel == "string" ? $(event.target).parents().add(event.target).filter(this.options.cancel).length : false);
        if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
            return true;
        }

        this.mouseDelayMet = !this.options.delay;
        if (!this.mouseDelayMet) {
            this._mouseDelayTimer = setTimeout(function() {
                self.mouseDelayMet = true;
            }, this.options.delay);
        }

        if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
            this._mouseStarted = (this._mouseStart(event) !== false);
            if (!this._mouseStarted) {
                event.preventDefault();
                return true;
            }
        }

        // these delegates are required to keep context
        this._mouseMoveDelegate = function(event) {
            return self._mouseMove(event);
        };
        this._mouseUpDelegate = function(event) {
            return self._mouseUp(event);
        };
        $(document)
            .bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
            .bind('mouseup.'+this.widgetName, this._mouseUpDelegate);

        // preventDefault() is used to prevent the selection of text here -
        // however, in Safari, this causes select boxes not to be selectable
        // anymore, so this fix is needed
        ($.browser.safari || event.preventDefault());

        event.originalEvent.mouseHandled = true;
        return true;
    },

    _mouseMove: function(event) {
        // IE mouseup check - mouseup happened when mouse was out of window
        if ($.browser.msie && !event.button) {
            return this._mouseUp(event);
        }

        if (this._mouseStarted) {
            this._mouseDrag(event);
            return event.preventDefault();
        }

        if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
            this._mouseStarted =
                (this._mouseStart(this._mouseDownEvent, event) !== false);
            (this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
        }

        return !this._mouseStarted;
    },

    _mouseUp: function(event) {
        $(document)
            .unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
            .unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);

        if (this._mouseStarted) {
            this._mouseStarted = false;
            this._preventClickEvent = (event.target == this._mouseDownEvent.target);
            this._mouseStop(event);
        }

        return false;
    },

    _mouseDistanceMet: function(event) {
        return (Math.max(
                Math.abs(this._mouseDownEvent.pageX - event.pageX),
                Math.abs(this._mouseDownEvent.pageY - event.pageY)
            ) >= this.options.distance
        );
    },

    _mouseDelayMet: function(event) {
        return this.mouseDelayMet;
    },

    // These are placeholder methods, to be overriden by extending plugin
    _mouseStart: function(event) {},
    _mouseDrag: function(event) {},
    _mouseStop: function(event) {},
    _mouseCapture: function(event) { return true; }
};

$.ui.mouse.defaults = {
    cancel: null,
    distance: 1,
    delay: 0
};

})(jQuery);
